金厂梁金矿黄铁矿地球化学特征对其成因制约.pdf

Advances in Geosciences 地球科学前沿, 2017, 7(6), 778-785 Published Online December 2017 in Hans. /journal/ag /10.12677/ag.2017.76079 Constraints of Pyrite Geochemical Characteristics on the Genesis of Jinchangliang Gold Deposit 1 2 3 1 1 1 Henan Yu , Yao Zheng , Chao Li , Guanghu Liu , Chengyang Wang , Zhenjun Sun 1 Institute of Disaster Prevention, Beijing 2 Tibet Geological Survey Institute of Nuclear Industry, Chengdu Sichuan 3 Geological Survey Institute of Jilin Province, Changchun Jilin th th th Received: Nov. 28 , 2017; accepted: Dec. 12 , 2017; published: Dec. 18 , 2017 Abstract Jinchangliang gold deposit in Aohanqi, Inner Mongolia is located in the Yanliao metallogenic belt on the northern margin of the North China Platform, is part of the Jinchanggouliang gold field. Symbiosis of pyrite and chalcopyrite, sphalerite and galena in mineralization period was gelatin- ous, fine-grained structure, fragmented structure. The result of electron microprobe analysis of pyrite in ore-forming period shows that S/Fe (1.95 - 1.99) is less than 2, belonging to endogenous sulfur deficient type; the pyrite has a close relationship with hydrothermal. The typomorphic characteristics of trace elements indicate that the gold deposit is magmatic hydrothermal deposit, pyrite is the main gold bearing mineral, and the occurrence of Au exists in the form of nanopar- ticles gold. Keywords Pyrite, Electron Microprobe Analysis, Typomorphic Characteristics of Elements, Jinchangliang Gold Deposit 金厂梁金矿黄铁矿地球化学特征对其成因的制 约 1